1.3
(a) If the distribution is normal, what is the probability that the sample mean hardness for a random sample of 12 pins is at least 51?
(b) What is the (approximate) probability that the sample mean hardness for a random sample of 45 pins is at least 51?
Pointer Writers: a professional writing service that provides original papers. Our products include academic papers of varying complexity and other personalized services, along with research materials for assistance purposes only. All the materials from our website should be used with proper references.
